Bitcoin mining, as we know it today, requires significant computational power and energy. As a result, dedicated mining machines, also known as miners, have become the mainstay in the Bitcoin mining industry. Among these, the Whatsminer M33S++ and M33S+ models from MicroBT have gained significant attention for their high performance and energy efficiency. This article delves into the characteristics of these two models, exploring their dimensions, weight, computing power, power consumption, energy efficiency (J/T), and the cooling systems they employ.

Whatsminer M33S++: A Superior Performer

The Whatsminer M33S++, considered one of the top Bitcoin miners in the market, is known for its high hash rate and energy efficiency. The size of the miner is typically 482mm x 650mm x 86mm, and it weighs about 27.5 kg. The weight and compact size allow for easier installation and mobility in various mining operations.
The M33S++ has a computing power or hash rate of 242 TH/s (terahashes per second), which means it can make 242 trillion attempts to solve a block per second. This robust computing power comes with a relatively high power consumption of approximately 7260W±5%.
When it comes to energy efficiency, the M33S++ delivers an average of 31 J/T, which refers to the amount of energy the miner consumes to perform a terahash. In the world of Bitcoin mining, a lower J/T value is preferred as it indicates greater energy efficiency.
Regarding cooling, the M33S++ uses a hydro cooling system. This system uses water to cool the components, ensuring the miner remains at a safe operating temperature.

Whatsminer M33S+ (216Th): The Efficient Alternative

Like its higher-performing counterpart, the Whatsminer M33S+ delivers a solid mining performance but at a slightly lower capacity. The M33S+ shares similar dimensions as the M33S++, measuring approximately 482mm x 650mm x 86mm, and weighs marginally less, around 27.5 kg.
This miner provides a computing power of 216 ± 10% TH/s, making it slightly less powerful than the M33S++. However, it also consumes less power, drawing approximately 6732W ± 10%.
Despite its reduced hash rate, the M33S+ excels in energy efficiency, delivering a value of 34 J/T ± 5%. This makes the M33S+ a viable option for those seeking efficient mining operations.
Similar to the M33S++, the M33S+ uses a hydro-cooling system to prevent overheating and ensure consistent performance.

Bitcoin Mining: Energy-intensive Task

Both the Whatsminer M33S++ and M33S+ models are robust Bitcoin miners that provide reliable performance. While the M33S++ offers higher computing power, the M33S+ delivers better energy efficiency, making it a more cost-effective option for long-term mining operations.
Regardless of the miner chosen, the cooling system is a critical component that cannot be overlooked. The hydro-cooling system used by both miners perform their duty well, but for those looking to enhance the lifespan and efficiency of their miners, exploring other cooling options, such as liquid cooling, could be beneficial. As Bitcoin mining evolves, so too will the technology that supports it, promising an exciting future for this innovative industry.
Bitcoin mining, as we all know, is an energy-intensive task. It involves solving complex cryptographic puzzles, a process that requires robust computing power and, consequently, substantial energy. This energy use often translates to substantial heat generation, necessitating efficient cooling mechanisms to prevent hardware damage and ensure mining efficiency. One solution that has emerged is SAI’s RACKBOX cooling system. This article provides an in-depth look into the specifics of this system and how it benefits Bitcoin mining operations.

Basic Overview and Input Power Specification

The SAI RACKBOX cooling system is housed in a 20ft HQ container with dimensions 6058mm x 2438mm x 2896mm. The structure is certified by a classification society, offering the assurance of its robust construction. The system’s shipping weight stands at 7 tons, excluding the server and coolant. However, once operational with the server and coolant included, the system weighs approximately 11 tons.
One of the RACKBOX’s significant characteristics is its power input specification. The total input power of the system is 940KW. Of this, 40KW is designated for the power consumption of the water pumps, cooling towers, and fans. This leaves an ample 900KW for the operation of the mining machines, each of which consumes around 10KW. The main switch of the system is rated at 1600A3P, and the input voltage frequency stands at 415V60HZ, adhering to the American standard.

Mining Machine Accommodation and Computing Power

The RACKBOX is designed to house 90 2U Whatsminer mining machines, with the capacity to accommodate a mix of M53, M33S++, and M33S+ models. This design ensures that miners have the flexibility to operate various machine models based on their specific mining requirements.
The system’s computing power is substantial and versatile. At the default frequency, the system offers a combined hash rate of between 17.82P and 20.34P, derived from the operation of 90 machines, each providing 198T to 226T. If miners choose to overclock their machines, this combined hash rate can increase dramatically to between 24.3P and 26.1P.

HVAC and Cooling Tower

The HVAC system of the RACKBOX is designed with flexibility in mind. It can operate efficiently at a water temperature of between 20℃ and 40℃ when overclocking and between 20℃ and 50℃ at the default frequency. The system also has a substantial flow rate of 65m³/h and a pipe diameter of DN150, ensuring adequate water flow for effective cooling.
The cooling tower, also housed in a 20ft HQ container, mirrors the dimensions of the RACKBOX. It shares the same shipping weight of 7 tons but operates at a weight of 12 tons. Most notably, it has a heat dissipation capacity of 1000KW and operates at a wet bulb temperature of 28℃, ensuring optimal cooling efficiency.


SAI’s RACKBOX cooling system introduces an innovative solution for Bitcoin mining operations. It promises improved efficiency, robust computing power, and a versatile operating range. By controlling heat generation effectively, the RACKBOX system helps miners maximize their mining machines’ longevity and productivity. In an industry where efficiency and sustainability are increasingly important, such cooling solutions represent a significant stride forward.

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